Sash construction.



G. H. PORSYTH.

SASH CONSTRUCTION.

APPLICATION IILEDMAY 11, 1007.

1,105,970. Patented Aug. 4, 1914.

GEORGE E. FORSYTH, OF CHICAGO, ILLINOIS.

SASH CONSTRUCTION.

Application flledMay 11, 190'). Serial No. 373,052.

To all whom it may concern Be it known that I, GEORGE H. FORSYTH, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sash Constructlons, of which the followingis a specification.

This invention'relates to improvements in sash constructions, the several features of improvement being more es ecially, although not exclusively, applica le to hollow sheet metal sash.

Among the objects of the invention areto produce a tight, dust-excluding, but easily operable sash, characterized by the provision of a relatively large area of dust-excluding contact between the sash and its guide; to provide new and improved means, preferably automatic, for adjusting the sash 'to variations in width both of the sash-guide and of the. sash opening; t0 provide new and improved means for. balancing or supporting the sash in' such a way as to tend to maintain thesash centrally of the openin and support the sash equally on both si es; ,to provide new and improved means for holdin the sash when lowered against the sill un er tension; to providenew and improved means for releasing both the sashholding or locking means and the sash-adjusting means and to provide a new and improved joint for the meeting members of the sash.v w

To these and other minor ends the invention' consists in the novel features of construction and combinations of parts hereinafter more particularly described and pointed out in theclaims.

The invention wiIlbe readily understood whenconsidered in connection with the accom anying drawings showing practical Inec anlcal embodiments of the same, wherein,--

Figure "1 is a side elevational view, broken out and partly in'vei'tical section, of a hollow sheet metal sash constructed and equipped in accordance with the present inventlon. Fig. 2 isa cross-sectional view on the line 2-2 of Fig. 1, looking downwardly. Fig. 3is a similar cross-sectional view on the linedf-B of Fig. 1, looking duwnwardly. Figs. 4, :5 andfi are'detail views in vertical section through the pinch-handle opening of the sash, more particularly illustrating the means for releasing the sash-locking and ad- Speciflcation of Letters Patent.

Patented Aug. 4,- 1914;.

justing means from the pinch-handles and maintainin -a permanent closure of the pinch-hand 'e'opening; and Fig. 7 is a crosssectional view similarto Fig. 2, illustrating a modification of the sash-adjusting means.

Referring to the drawings, 10 may desighate as an entirety the upper and lower crossbars of the sash, and 11 the vertical stiles, which parts may, as herein shown, be pressed or otherwise constructed from sheet metal so as to have a hollow or outwardly-opening channel form. u

12 indicates a side post of the frame, to which may be secured the sash-guide, this latter as shown in Figs. 1 and 2 consisting of a pair of suitably bent metal strips 13 havin parallel walls 13 and inwardly turne inclined lips or flanges 13?.

Referring now to the sash-adjusting means, which means may also tend to hold the sash in adjusted position, and which, as herein shown,-are contained within the hollow stiles 11, 14 designates bearing blocks secured to the inner transverse wall of the stile, in which bearing blocks are pivotally mounted on pivot-pins 15 a series of thrust-members each consisting of a pair of arallel short' links 16 lyin in the lane 0 the sash, on the outer ends of eac of which links are pivotally hung a pair of adjusting strips 17. These latter are formed, as most clearly shown in Fig. 2, with wedge-shaped outer margins that are adapted to be guided be tween the-straight and inclined walls 13 and 13" of the sash-guide whe'n said strips are raised, the action of which is to thrust or force the-side walls of the stile into a snug dust-excluding contact with the parallel side walls of.the guide, and also to force the inclined or beveled edges of the adjustingstrips into similar snug dust-excluding contact with the inclined lips or flanges 13 of the guide, thus afl'ordin a relatively large and extended area of ust-excluding contact. This action also tends to crowd the sides of the sash into snug engagement with the guides so as to partially or wholly support the'sash and also to adjust the sash laterally of the opening as well as transversely of the guides. In efl'ecting these results I also employ means for producing normally a lifting or supporting tendency on the thrust-members 16 and, incidentally, to some extent a lifting or supporting tendenoy on the sash itself, which means may consist of a tape or cord 18 secured at. one or both ends to a suitable sash-balance (not shown) and passing around and beneath the pulleys 19 mounted in the upper ends of vertical extensions 20 of the u per pair of thrust-links 16 on either side 0 the sash. To transmit this tendency from the upper pair of thrust-members to the series lying therebelow, as also to effect the release of the adj usting means when desired to raise the sash, I have herein shown arod 21 that passes through swiveled bearing blocks 22 mountedin and between the thrust-links 16 of each pair, said lifting rod having cotter or stop pins 23 extending therethrough suitably engaging the bearing-blocks 22; and the lower end of the-rod 21 on each side having a pivotal link connection 24 With a releasing lever 25. This latter is pivoted intermediate its ends on a suitable pivot-pin extending bee tween the side Walls of the lower bar of the sash, such a pin being shown at 26 and at its inner end threaded into a washer 27'that may be riveted in the rear wall of the sashbar as indicated at 28.

In the bottom of the sash is slidably mounted between guides 29 and 30 independently secured to the opposite side walls ofthe sash, so as not to interfere with the transverse,resiliency'of the side walls of the stile, a plunger 31,-the outer' end of which is tapered or inclined on its upper side, as shown at 32 to fit beneath a correspond-- ingly-shapedundercut of the guide flanges 13", said plunger being normally pressed into locking position by a compression spring 33 confined between the'inner end of the plunger and a stop 34 on the lower wall of the sash-bar. The inner end of the plunger has an upwardly projecting contact lug 35 adapted to be engaged for, the retraction of the plunger by the depending arm 36 of a bell-crank lever, the hub 37 of which is pi'votally mounted on the pivot-pin 26 that carries lever 25, while the inwardly ex-' tending arm 38 of the bell-crank lever is provided with a laterally projecting thumb- .piece 39' extending through an arc-shaped slot 40 in'the side wall of the sash-bar and cotiperating with a stationary pinch-handle or finger-piece 41 riveted to" the side wall of the sash-bar directly above the opening. The arm 38 of the bell-crank is further pro-- vided with an inwardly projecting In 42 (Fig. 3) lying beneath the inwardly pro ecting arm of lever 25, which latter stops shortof the transverse plane of the opening 40- and overlies the path of movement of the Lug 42. From the foregoing it will be seen that when the pinch-handles-39 and 41 are compressed, the bell-crank is first moved to carry its depending arm- 36 into engagement with the contact-lug 35 of the plunger; on the further closing movement of the. pinchhandles the plunger is withdrawn-from beneath the guide-flanges 13", at which time the lug 42 reaches and strikes the inwardly projecting arm of lever 25, thereby raising said arm and consequently depressing the outer arm and the releasing rod 21, which retracts the adjusting strips 17 and thus releases the hold of the sash on its guides whereby it nay be easily slid up and down. The steps last described in connectionwith the compressing of the pinch-handles 39 and 41 are well illustrated in the detail viewslatter I have further shown the inner armof the bell-crank as provided with a vertical plate 43 of somewhat greater width than the slot 40, as shown in Fig. 1', and of suflicientheight to cover the opening in all positions of the pinch-handles.

In order to prevent'the possibility ofthe thrust-members 16 from passing beyond the. horizontal position, any suitable stop device may be employed, such devices being herein illustrated as stop-blocks 44 (Fig. 1) riveted to one or both'sides of thesash stile just above the thrust-members so asnot to interfere with the transverse resiliency of the side walls of the sash stile. In this connection I may state that the side walls of the sash .stile may or may not be so formed as, whe'n inserted in the guide, to exert a lateral pressure against the walls of the guide underi their own resiliency. I In Fig. 7 I have illustrated a of the sash-adjusting means, wherein I have shown a plain channel-shaped guide-strip 45 secured to the post or side wall of the casingwithinwhich' guide are a pair of inmodification versely disposed vertical strips 46- oftriangular form in cross-section, with their oblique sides outwardly convergent, thus forming a wedge-shaped groovebetween them;

and I have shown pivoted to the ends of the thrust-bars 16 an adjusting-strip 47 having a corresponding wedge-shaped outer edge adapted to engage the wedge-shaped groove or channel formed by and between the strips 46. The strips 46may be vertically stationary, or they may be vertically movable with the sash, as shown, being connected to the latter by. pins 4.6 engaging transverse slots 11 in thesides of the sash stile to permit the necessary in and out play of said strips 46. In connection with "Fig. 2 Imay also mention that while I have shown the guiding flanges .or lips 13 as elastic strips. intethey might'be separate from the guides, '13 or might be replaced'by a solid or rigid beveled strip affording inclined and abutting surfaces for the a usting-strips 17. The strips 46 and 47 may be resilient, consisting of hollow -"or elastic material. Furthermore, the adjusting-strips 17 and 47 may, if desired, be outwardly bowed intermediate their ends to insure the outward pressure "gral with the guides h 13,- -obviou sly they thereof between the thrust-links, as well as at points coincident with the ends of the latter.

In Fig. 1 I have shown a further feature of improvement consisting of a novel joint between the vertical and transverse side wall members of the stile and bar, respectively, at the corners of the sash, the same consisting of a dovetailed projection 10* fitting a correspondingly shaped notch 11 in the adjacent edge of the sidewall of the stile, the two being preferably welded together. The leading advantages of this construction reside in the fact that it not only affords a flush outer surface to the entire sash, but also avoids double thickness of metal and increases the strength.

I claim:

1. The combination with a hollow metal sash and sash-guide, of an adjusting strip, contained within the sash, one or more links pivotally connecting said adjusting strip to the sash whereby said-adjusting strip is thrust'outwardly upon a relative movement between thesash and adjustin strip, and means cooperating with said ad usting strip to effect a snug contact with a side wall of thehguide in any adjusted position of said sas 2. The combination with a hollow metal sash and sash-guide, of an adjusting stri contained Within the sash, one or more lin is pivotally connecting said adjusting strip to the sash, means normally tending to create a relative vertical movement between said sash and adjusting strip whereby the latter through said links is thrust outwardly into engagement with the ids, and means cooperating with said ad usting strip to secure snug contact with a side wall of the guide in any adjusted position of said sash.

3. The combination with a hollow metal sash and sash-guide, of an adjusting strip,

contained within the sash, a pluralityof links pivotally connecting said adjusting strip to the sash, means normally tendingto create a relative vertical movement between said sash and adjusting strip whereby the latter through said links is thrust outwardly into engagement with the guide, and means car-- ried by the sash for positively operating said links in a manner to retract said adjustinlg strip from the guide.

4. he combination with a sash and sashguide, of an adjusting strip, a lurality of links pivotally" connecting sai adjusting strip'to the sash,- means normally tending'to create a relative vertical movement between said. sash and adjusting-strip whereby the latter through said linksisthru t outwardly into engagement with the gui, a springpressedlocking plunger for the sash, and means operatin to first retract said locking plunger and so sequently retract said adjusting strip from the guide.

5. The combination with a hollow metal sash and sash-guide, of an adjusting stri contained within the sash, a plurality of 1i s pivotally connecting said a justing strip to the sash, means exerting a continuous lifting effect on said adjusting strip, and manually operable'means carried by and attached to said sash for overcoming said lifting-effect.

6. The combination with a sash and sashguide, of an adjusting strip, a plurality of links pivotally connecting said adjusting strip to the sash, means exerting a continuous lifting effect on said adjusting strip, a locking plunger for the sash, and manually operable means for first retracting said locking lunger and subsequently overcoming said ifting effect on said adjusting strip;

7. The combination with a sash and sashguide, of an adjusting strip connected to the sash through means whereby said strip may be moved toward the sash-guide, said adjusting strip having a beveled edge, and a strip carried y the sash having a beveled edge cooperatin with the beveled edge of said adjusting s rip to force the sash into snug engagement with the guide.

8. The combination with a sash and rash guide, of an adjusting stri connected to the sash through means where y said strip may be moved toward the sash guide, said adjusting strip havinga beveled edge, and a strip carried by the sash and capable of bodil lateral movement relative thereto, said ast-named strip having a beveled edge cooperating with the beveled edge of said adjusting strip to effect a snug fit of the sash in the guide both in the plane of and transverse lly of the sash openin 9. he combination wit a sash and sash guide, of an adjusting strip pivotally connected to the sash and adapted to cause engagement of the latter with the guide, and means associated with said adjusting strip for actuating the latter to effect edgewise alinement of said sash, substantially as described.

10. The combination with a sash-guide, of a sash having a hollow stile formed with side walls relatively elastic in a transverse direction, means pivotally connected to the sash for effecting a snug engagement of said side walls with the side walls of the guide,

and means for releasing said snu engagement when the sash is to be move 11. The combination with a sashguide, of a sash having a hollow stile formed with laterally movable side walls, means pivotally connected to the sash for effecting a snug engagement of-said side walls with the side walls of the guide, and means for releasing said snug engagement when the sash is to be moved.

12. The combination with a sash-guide, of a sash having a hollow stile formed with laterally movable side walls, means pivot ally connected to the sash and located within said hollow stile for effecting a snug engagement of said side walls with the side walls of the guide, and means for releasing said snug engagement when the sash is to the plane of the sash, and a movable adjust-- ing member cooperating with said inclined portion of said auxiliary member in varying the pressure of the sash 'uponthe guide,

substantially as described.

14. The combination with a sash guide, 'of a sash having a side normally engaging the guide under pressure, said side having an auxiliary member with a portion inclined to the plane of the sash, and an adjusting member pivotally connected to the sash and cooperating with said inclined portion of the auxiliary member in varying the pressure of the sash upon the guide, substantially as described.

15. In a window construction, the combination of a sash guide, a sash engaging said guide, wedging means between said sash and said guide and having a bearing surface substantially co-extensive with the height of the sash, a balance connected with said wedging means, whereby the former is heldin any adjusted position, and equalizing means connected with said balance, whereby the Sides of the window sash are kept in horizontal alinement, substantially as described.

16. In a window construction, the combination of a sash guide, a sash engaging said guide, wedging strip between said sash and said guide and extending substantially the full length of the sash, a balance, connecting means between said balance and said wedg 'ing means, and equalizing means mounted on said sash and associatedwithsaid con-- necting i'neans, whereby the sash is kept in horizontal alinement, substantially as de,

scribed. 7

- 17. The combination with a hollow metal sash having expansible walls, of an adjust- 'ing strip located therein, and means cO6perating with said adjusting strip to expand the walls of the sash to effect a snug engagement between the sash and guide, and means for relieving said engagement, whereby the' sash maybe raised and lowered,. subst antially as described.

18. The combination with a hollow metal sash having e'xpansible walls, of an adjusting strip contained within the sash and extending substantially the full length thereof,-

and means cooperating with said adjusting strip to expand thewalls of the sash to effect a snug lateral engagement between the sash guide walls, substantially as de- 20. In combination with a window frame, J

a sash within said frame, counter-balancing means connected with said sash, and means connected with said counter-balancing means r for efiecting close engagement between both sides of the sash and the frame, substantially as described. GEORGE H. FORSYTH.

Witnesses:

SAMUEL N. Pom), FREDERICK C; Goonwm. I 

